That's exactly what he's done for his children's education by starting a radical ultra-exclusive school at his SpaceX headquarters in Hawthorne, California.

For the past four years, the non-profit 'experimental' school has been educating the billionaire's five sons, children of some SpaceX employees and a number of gifted students from Los Angeles.

The school has some unconventional teaching methods. Reports suggest it allows students to skip subjects they don't like, build flamethrowers and 'defeat evil AIs'.

Although the school has been known about for some time, it is shrouded in secrecy, with no known social media accounts or a clear application process.

Now an in-depth report by Ars Technica, which has uncovered previously unseen IRS documents, has revealed new details about what goes on at the secretive institution.

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If Elon Musk doesn't like something, he'll create his own version and that's exactly what he's done for his sons' educations. This image, taken in May 2017, shows (left to right) Musk with sons Kai, Damian, Griffin and Saxon enjoying a piggyback ride around Sydney's Opera House

The billionaire started a radical ultra-exclusive school at his SpaceX headquarters in California and for the past four years, the non-profit school has been educating Musk's five sons, children of some SpaceX employees, as well as a number of gifted students from Los Angeles

The school is named Ad Astra - Latin for 'to the stars' - and its students have an average age of 10.

Since it was first created in 2014, Ad Astra has moved from a mansion in southern California to the site of SpaceX's headquarters.

Musk created Ad Astra to 'exceed traditional school metrics on all relevant subject matter through unique project-based learning experiences,' according to a previously unreported document filed with the US Internal Revenue Service (IRS) uncovered by Ars Technica.

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It added: 'Because of the intense staff to student radio, [Ad Astra] will probably never exceed 50 students.'

Musk founded the school for the five boys he has with his former wife Justine; a set of twins, Griffin and Xavier who are 12, and a set of triplets, Damian, Saxon and Kai, aged 10, conceived using IVF.

With the new school, his goal is to cater for his students' particular set of skills, rather than force them to follow an arbitrary schedule.

The atmosphere is described as something closer to a venture capital incubator.

WHAT DO WE KNOW ABOUT ELON MUSK'S AD ASTRA SCHOOL?

For the past four years, Elon Musk's Ad Astra non-profit school has been educating Musk's five sons, children of some SpaceX employees, as well as a number of high-achievers from Los Angeles.

Here's what we know about it:

The school is named Ad Astra - Latin for 'to the stars'

Its students have an average age of just 10 and are aged between seven and 14

It is attended by Musk's five sons, children of some SpaceX employees, and a number of high-achievers from Los Angeles

Everything, including, tuition, is paid for by Elon Musk

According to IRS documents, he gave Ad Astra £359,000 ($475,000) in both 2014 and 2015

Last year, 400 families visited in the hope of securing one of just a dozen spots

There is an emphasis on math, science, engineering and ethics

Subjects such as languages, music and sports are optional

There are very few formal assessments and no grades are handed out

The school places a heavy emphasis on Artificial Intelligence (AI) and robots

Students are also encouraged to have a healthy interest in creativity - and destruction

This is vaguely reminiscent of Musk's own decision to raise funds for his Boring Company tunnelling firm by selling a range of 'not a flamethrower' products.

Although the school has been known about for some time, it is shrouded in secrecy, with no known social media accounts, websites or an application process. This image shows Musk's son Kai, one of three triplets, on his birthday in August 2017

Weekly assignments are also given out that focus on a particular issue in detail, whether that's the situation in North Korea or the gentrification of urban areas.

Most of the work is conducted on laptops, and students are taught how to code with a variety of programming languages.

Many of them go on to build their own websites using what they have learned.

Some are monetised using the school's own currency, the Astra, which is traded among students.

WHAT TYPE OF EXERCISES DO CHILDREN AT ELON MUSK'S 'SECRET SCHOOL' DO?

Elon Musk has started a secret school at his SpaceX headquarters for child entrepreneurs, young AI experts and gifted coders.

Very little is known about the school, known as Ad Astra. A website only a home page and a link for current parents.

In a rare interview last year, head teacher Joshua Dahn revealed some insights into some of the exercises children get involved in.

He described one problem-solving exercise, called 'The Lake'.

This sees students discussing a town with a factory that is polluting the local water and destroying wildlife.

The factory employs all the people in the town, so voters keep politicians who support the factory in power.

Students have to decide who is most to blame for the pollution, the voters, the politicians or the factory owners?

Another project involves a diplomatic exercise.

Students pretend to be delegates from North Korea, China and the US and have a debate North Korea's nuclear programme.

The students also have an internal 'bazaar' with its own currency teach children about economics.

There is no A to F grading system, rather, for many projects, children are given critical and honest feedback from teachers and their peers.

In one module, which Mr Dahn says is like the school's own TED Talk symposium, pupils present and defend their own ideas from a panel of teachers.

They have also given similar presentations to faculty members at the University of California in Los Angeles and the University of Southern California, along with accompanying feedback.

Each year, the curriculum is totally rewritten, with around half of the content decided upon by the students themselves, Ars Technica reports.

Musk himself has said virtually nothing about Ad Astra. One of the few insights into the school comes from an interview given to Beijing TV in 2015.

The school is named Ad Astra - is Latin for 'to the stars' - and its students have an average age of just 10. This image shows Musk's son Damian on the occasion of his birthday in 2017

WHAT WAS ELON MUSK'S CHILDHOOD LIKE?

A biography of Elon Musk from author Ashlee Vance, published in 2015, revealed his childhood in South Africa was difficult as a result of severe bullying.

In one incident, his classmates pushed him down a concrete stairwell.

In the biography, Musk recounts the experience: 'They got my best f******* friend to lure me out of hiding so they could beat me up. And that f******* hurt.

'For some reason they decided that I was it, and they were going to go after me nonstop. That’s what made growing up difficult. For a number of years there was no respite.

'You get chased around by gangs at school who tried to beat the [expletive] out of me, and then I’d come home, and it would just be awful there as well.'

Musk has also said he endured psychological torture from his father.

In it, Musk said his school does away with the traditional grade structure of American primary education.

'They weren't doing the things I thought should be done,' Musk said during the interview.

'I thought, well, let's see what we can do. Maybe creating a school would be better.'

Despite its unconventional approach, according to Christina Simon, author of Beyond the Brochure, a guide to private elementary schools in the city, demand for the school is high.

'There are people who could afford any of the private schools in LA but want that school in particular,' she says.

'It's very much about Elon Musk and who he is.'

Last year, 400 families visited in the hope of securing one of just a dozen spots.

'I talked to several parents who were going to take a chance and apply, even though it was impossible to verify that it was an Ad Astra application,' Ms Simon told Ars Technica.

Last year, 400 families visited in the hope of securing one of just a dozen spots. This image shows Musk's friend Sam (left) and son Griffin (right) in October 2017 arriving for lunch in the same outfit

'That's the level of interest in this school. I cannot imagine that happening with any other school, public or private.'

The school is even mysterious within SpaceX. Ms Simon says she has heard from various SpaceX families that they have tried and failed to get information about the school.

What the future holds for the school remains unclear, with two of Musk's five sons potentially entering mainstream high schools in the near future.

How well they succeed could be a measure of the success of the school's approach when it comes to the wider world.

In December, an online application form for Ad Astra began appearing in Los Angeles parenting forums and Facebook groups asking for details of grades, test scores, and personal information about families. This image shows Musk's son Saxon on his birthday in 2017

When the school first opened, it taught only up to the sixth grade, but this has increased year on year in line with Musk's oldest children's needs. Musk is pictured here in 2015 at the opening of the school with his boys Griffin, left, and Xavier, right, and then wife Talulah Riley

Whether Musk will remain as dedicated to the project once his own children have all left also remains to be seen. Pictured in 2015 is Talulah Riley (back left) with her then husband Elon Musk (back right) and his sons Griffin (front left) and Xavier (front right)

However, Musk may decide to extend the school's educational provision so that they can continue their studies at Ad Astra.

That would not be without precedent. When the school first opened, it taught only up to the sixth grade, but this has increased year on year in line with the needs of Musk's oldest children.

Whether Musk will remain as dedicated to the project once his own children have all left also remains to be seen.

However, Mr Dahn has promised that the school will offer its curriculum open source for every family that applied for admission, says Ars Technica.

That means the school's ethos could continue on and potentially be repeated elsewhere.